//
//  VisitorLoginView.swift
//  SinaWeibo25
//
//  Created by David on 16/3/5.
//  Copyright © 2016年 itcast. All rights reserved.
//

import UIKit
import SnapKit

//声明协议 ,需要继承基协议
//OC中有多继承么 如果没有 用什么替代
// optional 还是OC中的关键字 如果在Swift中要使用OC中的一些机制 或者特性 需要在前加入@objc告诉编译器该声明是兼容OC的
@objc protocol VisitorLoginViewDelegate: NSObjectProtocol {
    
    //声明协议方法   可选的协议方法
   optional func userWillRegister()
    
    
    //登录的协议方法
    func userWillLognin()
}


class VisitorLoginView: UIView {
    
    var didClickBlock: (() -> ())?
    
    
    //声明代理对象  代理的声明 在OC中必须使用 weak/assagin  为了防止循环引用
    weak var visitorDelegate: VisitorLoginViewDelegate?
    
    //MARK: 外部调用的方法
    func setupInfoWith(title: String, imageName: String?) {
        tipLabel.text = title
        
        if imageName != nil {
            //不是首页
            circleIcon.image = UIImage(named: imageName!)
            //隐藏大房子
            largeHouse.hidden = true
            
            //设置不是渐隐
            bringSubviewToFront(circleIcon)
        } else {
            //是首页
            //让圈圈开始转动
            startAnimation()
        }
        
    }
    
    private func startAnimation() {
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.repeatCount = MAXFLOAT
        anim.duration = 10
        anim.toValue = 2 * M_PI
        //默认就是移除动画
        //在动画结束 或者页面处于非活跃状态时 动画效果不移除图层
        anim.removedOnCompletion = false
        //添加到图层
        circleIcon.layer.addAnimation(anim, forKey: nil)
    }
    
    
    
   //要自定义视图 首先找到入口
    override init(frame: CGRect) {
        //super
         super.init(frame: frame)
        
        //访客视图的自定义
        setUpUI()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    
    //MARK: 自定义访客视图
    private func setUpUI() {
        
        addSubview(circleIcon)
        addSubview(maskImage)
        addSubview(largeHouse)
        addSubview(tipLabel)
        addSubview(loginBtn)
        addSubview(registerBtn)
        
        
        circleIcon.snp_makeConstraints { (make) -> Void in
            make.centerX.equalTo(self.snp_centerX)
            make.centerY.equalTo(self.snp_centerY).offset(-80)
//            make.center.equalTo(self.snp_center)
        }
        
        largeHouse.snp_makeConstraints { (make) -> Void in
            make.center.equalTo(circleIcon.snp_center)
        }
        
        tipLabel.snp_makeConstraints { (make) -> Void in
            make.centerX.equalTo(circleIcon.snp_centerX)
            make.top.equalTo(circleIcon.snp_bottom).offset(16)
            make.width.equalTo(230)
            make.height.equalTo(40)
        }
        
        loginBtn.snp_makeConstraints { (make) -> Void in
            make.left.equalTo(tipLabel.snp_left)
            make.top.equalTo(tipLabel.snp_bottom).offset(16)
            make.width.equalTo(100)
            
        }
        
        registerBtn.snp_makeConstraints { (make) -> Void in
            make.right.equalTo(tipLabel.snp_right)
            make.top.equalTo(tipLabel.snp_bottom).offset(16)
            make.width.equalTo(100)
        }
        
        maskImage.snp_makeConstraints { (make) -> Void in
            make.center.equalTo(circleIcon.snp_center)
        }
        
        
        let value: CGFloat = 236.0 / 255.0
        backgroundColor = UIColor(red: value, green: value, blue: value, alpha: 1)
        
        
        //添加按钮的点击事件  Selector 无法将一个字符串的引用实例化成为Selector类型的方法选择器
        loginBtn.addTarget(self, action: "loginBtndidClick", forControlEvents: .TouchUpInside)
        registerBtn.addTarget(self, action: "registerBtndidClick", forControlEvents: .TouchUpInside)
        
    }
    
    
    //MARK:  按钮的监听事件
    @objc private func loginBtndidClick() {
        print(__FUNCTION__)
        //执行闭包  强制解包表示 闭包不能够为空
//        didClickBlock?()
//        if xxx != nil && respondsToSelector(<#T##aSelector: Selector##Selector#>)
        visitorDelegate?.userWillLognin()
        
    }
    
    @objc private func registerBtndidClick() {
        print(__FUNCTION__)
        //        if xxx != nil && respondsToSelector(<#T##aSelector: Selector##Selector#>)
        visitorDelegate?.userWillRegister?()
    }
    
    
    //懒加载子视图
    
    //遮罩视图
    private lazy var maskImage: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    private lazy var circleIcon: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
    //大房子
    private lazy var largeHouse: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
    private lazy var tipLabel: UILabel =  UIFactory.labelFactory("", textColor: UIColor.darkGrayColor(), fontSize: 14)
  
    
    //登录和注册按钮
    private lazy var loginBtn: UIButton = UIFactory.buttonWithtitle("登录", backImageName: "common_button_white_disable", textColor: UIColor.darkGrayColor(), fontSize: 14)
    
    
    
    private lazy var registerBtn: UIButton = UIFactory.buttonWithtitle("注册", backImageName: "common_button_white_disable", textColor: themeColor, fontSize: 14)

}
